From 1e70503c405029e610fad115ab233a2e27bfd0a7 Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fl.fischer@fau.de>
Date: Fri, 3 Nov 2017 17:40:42 +0100
Subject: don't use floats

THIS BREAKS THE OLD BALANCES!!!
---
 geldschieberbot.py | 27 ++++++++++++++++++++++-----
 1 file changed, 22 insertions(+), 5 deletions(-)

(limited to 'geldschieberbot.py')

diff --git a/geldschieberbot.py b/geldschieberbot.py
index ee73877..33115e9 100644
--- a/geldschieberbot.py
+++ b/geldschieberbot.py
@@ -17,6 +17,23 @@ group_id = "GELD!!!"
 
 send_cmd = "signal-cli -u irgendwer send -g irgendwem"
 
+def to_cent(euro):
+    euro = euro.split('.')
+    if len(euro) > 2:
+        raise TypeError
+    euro[0] = int(euro[0])
+    if len(euro) < 2:
+        euro.append(0)
+    else:
+        if len(euro[1]) == 1:
+            euro[1] = int(euro[1]) * 10
+        else:
+            euro[1] = int(euro[1])
+    return euro[0] * 100 + euro[1]
+
+def to_euro(cents):
+    return str(cents/100)
+
 def send(msg):
     subprocess.run(send_cmd.split(' '), input=msg.encode())
 
@@ -29,11 +46,11 @@ def create_summary(user):
         if amount == 0:
             continue
         total -= amount
-        summary += "\t{} {} {:.2}\n".format("<-" if amount < 0 else "->", person, abs(amount))
+        summary += "\t{} {} {}\n".format("<-" if amount < 0 else "->", person, abs(to_euro(amount)))
     if summary == "":
         summary = "\tAll fine :)\n"
     else:
-        summary += "\tBalance: {:.2}".format(total)
+        summary += "\tBalance: {}".format(to_euro(total))
     summary = user + ":\n" + summary
     return summary
 
@@ -177,7 +194,7 @@ def handle_input(inp):
                     sender = num2name[sender_number]
 
                     try:
-                        amount = float(amount)
+                        amount = to_cents(amount)
                     except:
                         send("ERROR: amount musst be a number")
                         continue
@@ -196,7 +213,7 @@ def handle_input(inp):
 
                     send("New Balance: {0} {1} {2:.2} {3}\n".format(sender,
                                                                 ("->" if p_balance > 0 else "<-"),
-                                                                abs(p_balance),
+                                                                abs(to_euro(p_balance)),
                                                                 recipient))
                 
         elif cmd == "!tanken":
@@ -204,7 +221,7 @@ def handle_input(inp):
                 send('ERROR: !tanken not in form "!tanken amount person [info]"')
                 continue
             try:
-                amount = float(w[1])
+                amount = to_cents(w[1])
             except:
                 send("ERROR: amount musst be a number")
                 continue
-- 
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